# 关键字实参 +设置默认值
def describe_pet(pet_type, pet_name='yangyang'):
    "sdff"
    print(pet_type)
    print(pet_name)


describe_pet('sheep')
describe_pet(pet_type='cat', pet_name='mimi')
describe_pet(pet_name='pig', pet_type='zhuzhu')

# 